Over the past ten years, the NRA has claimed a high "win rate" in elections: the number of races they won out of those in which they were financially involved or endorsed a candidate. In 2004, for example, the group advertised a 95% win rate. In 2008, they advertised an 85% win rate.

But this number loses its luster when you consider that over the past ten years the NRA has taken credit for over 100 races where their candidate was running without an opponent.

Source: Research by pollster and political analyst Douglas Schoen and political analyst James Farwell, incorporating Paul Waldman's report "The Myth of NRA Dominance."